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Description |
Geographic Range [top]
Countries occurrence:
Native:
China; Hong Kong; Japan; Korea, Democratic Peoples Republic of; Korea, Republic of; Mongolia; Russian Federation; Taiwan, Province of China; Viet Nam
Vagrant:
Lao Peoples Democratic Republic; Myanmar; Northern Mariana Islands; Philippines; Thailand
Additional data:
? Continuing decline in area of occupancy (AOO): Unknown
? Extreme fluctuations in area of occupancy (AOO): No ? Estimated extent of occurrence (EOO) - km2: 3940000
? Continuing decline in extent of occurrence (EOO): Unknown ? Extreme fluctuations in extent of occurrence (EOO): No
? Continuing decline in number of locations: Unknown
? Extreme fluctuations in the number of locations: No
Range Map: Click here to open the map viewer and explore range.
Population [top]
Population: The global population size has not been quantified, but the species is described as very common in Japan and common in China (Feare and Craig 1998), while national population estimates include: c.10,000-100,000 breeding pairs, c.1,000-10,000 individuals on migration and c.50-1,000 wintering individuals in China; c.1,000-10,000 individuals on migration and c.1,000-10,000 wintering individuals in Taiwan; c.10,000-100,000 breeding pairs in Korea; c.10,000-100,000 breeding pairs and c.50-1,000 wintering individuals in Japan and c.10,000-100,000 breeding pairs and c.1,000-10,000 individuals on migration in Russia (Brazil 2009).
Trend Justification: The population trend is difficult to determine because of uncertainty over the impacts of habitat modification on population sizes.
Current Population Trend: Unknown
Additional data:
? Number of mature individuals: Unknown ? Continuing decline of mature individuals: Unknown
? Extreme fluctuations: No ? Population severely fragmented: No
? Continuing decline in subpopulations: Unknown
? Extreme fluctuations in subpopulations: No ? All individuals in one subpopulation: No
Habitat and Ecology [top]
Citation: BirdLife International. 2016. Spodiopsar cineraceus. The IUCN Red List of Threatened Species 2016: e.T22710896A94265691. http://dx.doi.org/10.2305/IUCN.UK.2016-3.RLTS.T22710896A94265691.en. Downloaded on 23 January 2017.
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